EP0720871B1 - Device for applying striped coating of viscous material - Google Patents
Device for applying striped coating of viscous material Download PDFInfo
- Publication number
- EP0720871B1 EP0720871B1 EP95118490A EP95118490A EP0720871B1 EP 0720871 B1 EP0720871 B1 EP 0720871B1 EP 95118490 A EP95118490 A EP 95118490A EP 95118490 A EP95118490 A EP 95118490A EP 0720871 B1 EP0720871 B1 EP 0720871B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- opening
- cylindrical
- housing
- outlet opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
Definitions
- the invention relates to a device according to the preamble of the claim 1.
- Such a device is known from EP 0 293 065 A2.
- This Document describes an apparatus for depositing viscous fluid on one surface.
- the device includes an inner nozzle body through hole for the delivery of the viscous material and one funnel-shaped annulus that the conically tapered end of the Surrounds nozzle body and has an air outlet opening at the end.
- This Air outlet opening is located in an adjustable lengthwise direction Use that allows the air outlet opening to be axially related to the inside the material opening located in the air outlet opening.
- the task according to DE 41 20 881 Cl can be solved by surrounding the material nozzle Annulus is divided into individual axially parallel channels.
- the object of the present invention is therefore the generic device form such that a uniform application of the viscous material can be achieved with relatively simple means.
- the gas outlet opening is not surrounded by a razor-sharp edge, but through a cylindrical opening of limited length in the gas annulus final end wall can be formed. It is therefore sufficient if the material exit plane with the entry plane of this short cylindrical Opening section coincides, since here the gas flow is already full Has constricted.
- the single figure shows a schematic longitudinal section through the Nozzle area of a device according to the invention.
- the device also includes a material feed system, not shown for viscous material, a pressurized gas source and a controller for the Feeding the two media.
- a cylindrical housing 10 is shown in the drawing, which together with a concentric tubular inside the housing 10 Inner part 12 defines an annular space 14 which is in the upper, upstream Area connected to gas connection openings 16, 18 of the housing 10 is.
- the tubular inner part 12 has a channel 20 inside, through which the viscous material to be applied is passed.
- the walls run of the tubular inner part with a blunt cone up to a nozzle opening 22 together.
- the nozzle opening 22 formed as a short cylindrical portion that the wall of the penetrates tubular inner part 12 which is closed at the end.
- the level at which this short cylindrical portion of the nozzle opening 22 ends in the flow direction and which is identified in the drawing by the reference number 24 be referred to as the plane of the nozzle opening of the material nozzle.
- the housing 10 has a closure cap 26 lower, exit-side end, for example on the lower end of the cylindrical housing 10 with the aid of a not shown in detail Thread pair is unscrewed.
- This cap 26 includes one End wall 28 which tapers the annular space 14 on the inside and transferred into a gas outlet opening 30, which is concentric with the nozzle opening 22 for the viscous material.
- the gas outlet opening 30 penetrates the End wall 28 in the form of a short cylindrical section, which - related to the terminology introduced at the beginning - an entry level 32 of the Has gas outlet opening 30 and a corresponding outlet level 34. According to the drawing, the plane 24 of the nozzle opening 22 and the entry plane fall 32 of the gas outlet opening 30 essentially together.
- the material flow of the viscous material does not therefore first enter the Funnel area at the end of the annulus, but directly into the initial part the gas outlet opening, in which the gas flow tapers sharply Has.
- the plane 24 of the nozzle opening 22 can be in any position between the entry level 32 and the exit level 34 of the gas inlet opening 30, including, as shown, the entry level 32. It all that matters is that the flow of material tapered from the start and accelerated part of the gas flow is introduced.
Landscapes
- Coating Apparatus (AREA)
- Confectionery (AREA)
Description
Die Erfindung betrifft eine Vorrichtung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device according to the preamble of the claim 1.
Eine derartige Vorrichtung ist aus der EP 0 293 065 A2 bekannt. Diese Druckschrift beschreibt eine Vorrichtung zum Ablagern von viskosem Fluid auf einer Oberfläche. Die Vorrichtung umfaßt einen inneren Düsenkörper mit durchgehender Bohrung für die Abgabe des viskosen Materials und einen trichterförmigen Ringraum, der das konisch zugespitzte Ende des Düsenkörpers umgibt und am Ende eine Luftaustrittsöffnung aufweist. Diese Luftaustrittsöffnung befindet sich in einem in Längsrichtung verstellbaren Einsatz, der es gestattet, die Luftaustrittsöffnung axial in bezug auf die im Inneren der Luftaustrittsöffnung liegende Materialöffnung zu verstellen.Such a device is known from EP 0 293 065 A2. This Document describes an apparatus for depositing viscous fluid on one surface. The device includes an inner nozzle body through hole for the delivery of the viscous material and one funnel-shaped annulus that the conically tapered end of the Surrounds nozzle body and has an air outlet opening at the end. This Air outlet opening is located in an adjustable lengthwise direction Use that allows the air outlet opening to be axially related to the inside the material opening located in the air outlet opening.
Eine andere Lösung ist aus der DE 41 20 881 C1 bekannt. Typische Beispiele für die mit der bekannten Vorrichtung aufgetragenen viskosen Materialien sind Klebstoffe oder Dichtungsmaterialien. Während es im Stand der Technik gemäß US-PS 4 995 333 angestrebt worden war, das viskose Material mit einem Drall abzugeben, wird in der DE 41 20 881 Cl ausgeführt, infolge der Drallbewegung werde der Strang in Kreisbögen jeweils gleichen Durchmessers abgelegt. Das bedeute bei einem durchgehenden Streifen, daß an den Rändern dieses Streifens ein stärkerer Auftrag erfolge als im Mittelbereich. Der in der Druckschrift angegebenen Aufgabe zufolge soll der Streifenauftrag verbessert werden, also quer zum Streifen eine weitgehend gleichmäßige Stärke erlangen. Dies soll sinngemäß dadurch geschehen, daß der den MaMaterialstrom umgebende Gasstrom achsparallel geführt, also so weit wie möglich von tangentialen Komponenten freigehalten wird.Another solution is known from DE 41 20 881 C1. Typical examples for the viscous materials applied with the known device are adhesives or sealing materials. While it is in the prior art according to US Pat. No. 4,995,333, the viscous material was coated with a Giving swirl is carried out in DE 41 20 881 Cl, as a result of The strand is twisted in arcs of the same diameter filed. With a continuous stripe that means that the Edging of this strip is a stronger job than in the middle. According to the task specified in the publication, the strip application should be improved, i.e. a largely uniform across the strip Gain strength. This is to be done analogously in that the material flow surrounding gas flow axially parallel, so far as possible from tangential components.
Nach den angegebenen Lösungsmerkmalen soll die Aufgabe nach der DE 41 20 881 Cl dadurch gelöst werden, daß der die Materialdüse umgebenede Ringraum in einzelne achsparallele Kanäle unterteilt ist. According to the specified solution characteristics, the task according to DE 41 20 881 Cl can be solved by surrounding the material nozzle Annulus is divided into individual axially parallel channels.
Ob und inwieweit der gewünschte Erfolg auf diese Weise erreicht wird, mag zumindest bei einer Ausführungsform gemäß der Zeichnung der Druckschrift als zweifelhaft erscheinen, da das Gas nach der genauen achsparallelen Führung in den Kanälen zusammen mit dem viskosen Material in einen relativ großen Trichter mündet, in dem eine achsparallele Führung nicht stattfindet und tangentiale Bewegungen angesichts der starken Einschnürung durchaus denkbar sind. In jedem Falle aber stellt es einen relativ großen Aufwand dar, auf der Außenfläche des Materialdüsenkörpers über dessen gesamte Länge parallele Führungsnuten herzustellen. Whether and to what extent the desired success is achieved in this way may be at least in one embodiment according to the drawing of the document appear to be doubtful since the gas after the exact axially parallel Guiding in the channels together with the viscous material in a relative large funnel opens in which an axially parallel guidance does not take place and tangential movements in view of the strong constriction are conceivable. In any case, however, it is relatively expensive represents, on the outer surface of the material nozzle body over its entire To produce length of parallel guide grooves.
Aufgabe der vorliegenden Erfindung ist es daher, die gattungsgemäße Vorrichtung derart auszubilden, daß ein gleichmäßiger Auftrag des viskosen Materials mit relativ einfachen Mitteln erreicht werden kann.The object of the present invention is therefore the generic device form such that a uniform application of the viscous material can be achieved with relatively simple means.
Diese Aufgabe wird erfindungsgemäß bei einer Vorrichtung der obigen Art durch die Merkmale des Anspruchs 1 gelöst.This object is achieved in a device of the above type solved by the features of claim 1.
Da der Gasstrom an der Gasaustrittsöffnung eine erhebliche Einschnürung erfährt, wird der Strom hier stark beschleunigt. Da der Materialstrom im wesentlichen im Zentrum der Gasaustrittsöffnung abgegeben wird, legt sich der Gasstrom ringförmig um den Materialstrom und überführt den Materialstrom gezielt auf die Auftragsfläche. Es wird also vermieden, daß der Materialstrom und der Gasstrom zunächst in einem trichterförmigen Endbereich des Ringraumes unter undefinierten Strömungsverhältnissen aufeinandertreffen, wie es bei der Ausführungsfrom gemäß DE 41 20 881 C1 zumindest bei der in der Zeichnung gezeigten Version der Fall sein könnte.Because the gas flow at the gas outlet opening is significantly constricted experienced, the current is greatly accelerated here. Because the material flow essentially is released in the center of the gas outlet opening, the Gas flow in a ring around the material flow and transfers the material flow targeted to the order area. So it is avoided that the material flow and the gas flow initially in a funnel-shaped end region of the annular space meet under undefined flow conditions, such as it in the embodiment according to DE 41 20 881 C1 at least in the the version shown in the drawing could be the case.
Die Gasaustrittsöffnung wird nicht durch eine messerscharfe Kante umgeben, sondern durch eine zylindrische Öffnung begrenzter Länge in einer den Gas-Ringraum abschließenden Stirnwand gebildet sein. Daher reicht es aus, wenn die Materialaustrittsebene mit der Eintrittsebene dieses kurzen zylindrischen Öffnungsabschnitts zusammenfällt, da hier der Gasstrom bereits die volle Einschnürung erlangt hat.The gas outlet opening is not surrounded by a razor-sharp edge, but through a cylindrical opening of limited length in the gas annulus final end wall can be formed. It is therefore sufficient if the material exit plane with the entry plane of this short cylindrical Opening section coincides, since here the gas flow is already full Has constricted.
Im folgenden werden bevorzugte Ausführungsbeispiele der Erfindung anhand der beigefügten Zeichnung näher erläutert.Preferred exemplary embodiments of the invention are described below the attached drawing explained.
Die einzige Figur zeigt einen schematischen Längsschnitt durch den Düsenbereich einer erfindungsgemäßen Vorrichtung.The single figure shows a schematic longitudinal section through the Nozzle area of a device according to the invention.
Zu der Vorrichtung gehören im übrigen ein nicht gezeigtes Materialzufuhrsystem für viskoses Material, eine Druckgasquelle und eine Steuerung für die Zufuhr der beiden Medien. The device also includes a material feed system, not shown for viscous material, a pressurized gas source and a controller for the Feeding the two media.
Gezeigt ist in der Zeichnung ein zylindrisches Gehäuse 10, das zusammen
mit einem konzentrischen, im Inneren des Gehäuses 10 liegenden rohrförmigen
Innenteil 12 einen Ringraum 14 begrenzt, der im oberen, stromaufwärtigen
Bereich mit Gasanschlußöffnungen 16,18 des Gehäuses 10 verbunden
ist. Das rohrförmige Innenteil 12 weist im Inneren einen Kanal 20 auf,
durch den das aufzutragende, viskose Material geführt wird. Am unteren Ende
in Fig. 1, das dem Austrittsende des Materials entspricht, laufen die Wände
des rohrförmigen Innenteils mit stumpfem Konus bis hin zu einer Düsenöffnung
22 zusammen. Im einzelnen ist gemäß der Zeichnung die Düsenöffnung
22 als kurzer zylindrischer Abschnitt ausgebildet, der die Wand des
rohrförmigen, am Ende verschlossenen Innenteils 12 durchdringt. Aus Gründen,
die später genauer erläutert werden sollen, soll die Ebene, in der dieser
kurze zylindrische Abschnitt der Düsenöffnung 22 in Strömungsrichtung endet
und die in der Zeichnung durch die Bezugsziffer 24 gekennzeichnet ist,
als Ebene der Düsenöffnung der Materialdüse bezeichnet werden.A
Das Gehäuse 10 weist im dargestellten Beispiel eine Verschlußkappe 26 am
unteren, austrittsseitigen Ende auf, die beispielsweise auf das untere Ende
des zylindrischen Gehäuses 10 mit Hilfe einer nicht im einzelnen dargestellten
Gewindepaarung augeschraubt ist. Diese Verschlußkappe 26 umfaßt eine
Stirnwand 28, die auf der Innenseite den Ringraum 14 konisch verjüngt und
in eine Gasaustrittsöffnung 30 überleitet, die konzentrisch zur Düsenöffnung
22 für das viskose Material liegt. Die Gasaustrittsöffnung 30 durchdringt die
Stirnwand 28 in der Form eines kurzen zylindrischen Abschnitts, der - bezogen
auf die eingangs eingeführte Terminologie - eine Eintrittsebene 32 der
Gasaustrittsöffnung 30 und eine entsprechende Austrittsebene 34 aufweist.
Gemäß der Zeichnung fallen die Ebene 24 der Düsenöffnung 22 und die Eintrittsebene
32 der Gasaustrittsöffnung 30 im wesentlichen zusammen.In the example shown, the
Der Materialstrom des viskosen Materials tritt also nicht zunächst in den
Trichterbereich am Ende des Ringraumes, sondern unmittelbar in den Anfangsteil
der Gasaustrittsöffnung ein, in der sich der Gasstrom stark verjüngt
hat. Die Ebene 24 der Düsenöffnung 22 kann in einer beliebigen Position zwischen
der Eintrittsebene 32 und der Austrittsebene 34 der Gaseintrittsöffnung
30, einschließlich, wie dargestellt, der Eintrittsebene 32 liegen. Es
kommt lediglich darauf an, daß der Materialstrom von Anfang an in den verjüngten
und beschleunigten Teil des Gasstroms eingeführt wird.The material flow of the viscous material does not therefore first enter the
Funnel area at the end of the annulus, but directly into the initial part
the gas outlet opening, in which the gas flow tapers sharply
Has. The plane 24 of the nozzle opening 22 can be in any position between
the entry level 32 and the
Claims (2)
- Apparatus for the application of viscous material as a strip to a face, having a central material nozzle (12, 22), which dispenses the material, and a gas supply system having an annular space (14) which surrounds at least the end region of the material nozzle (12, 22) and which narrows in the direction of flow to a cylindrical gas outlet opening (30), which lies concentrically to the nozzle opening (22) of the material nozzle, the plane (24) of the nozzle opening (22) of the material nozzle lying between the inlet plane (32) and the outlet plane (34) of the cylindrical gas outlet opening (30), characterised in that the material nozzle forms a tubular, cylindrical inner portion (12) within an outer housing (10), which is substantially cylindrical, and delimits, with the housing (10), a cylindrical annular space (14) which extends up to a front wall (28) at the end, located on the outlet side, of the housing (10) and tapers at the inner side of the end wall (28) conically towards the gas outlet opening (30).
- Apparatus according to claim 1, characterised in that the downstream end wall (28) of the annular space (14) is formed by a closure hood (26) at the end of the housing (10).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19500053 | 1995-01-03 | ||
| DE19500053A DE19500053C1 (en) | 1995-01-03 | 1995-01-03 | Dispenser of strips of viscous material e.g. adhesives, sealants |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0720871A1 EP0720871A1 (en) | 1996-07-10 |
| EP0720871B1 true EP0720871B1 (en) | 2000-03-01 |
Family
ID=7750945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95118490A Expired - Lifetime EP0720871B1 (en) | 1995-01-03 | 1995-11-24 | Device for applying striped coating of viscous material |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0720871B1 (en) |
| DE (2) | DE19500053C1 (en) |
| ES (1) | ES2142444T3 (en) |
| PT (1) | PT720871E (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29713744U1 (en) * | 1997-08-01 | 1998-12-03 | Planatol Klebetechnik GmbH, 83101 Rohrdorf | Glue and / or moistening device |
| DE102014209172A1 (en) * | 2014-05-15 | 2015-11-19 | Robert Bosch Gmbh | Apparatus for focusing a viscous medium, jet system and production equipment dispensed from a dispensing opening of a dispenser of a jet apparatus |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3108793C2 (en) * | 1981-03-07 | 1985-01-17 | Bima Maschinenfabrik Gmbh, 7450 Hechingen | Adhesive applicator, in particular for the leather goods and shoe industry |
| US4891249A (en) * | 1987-05-26 | 1990-01-02 | Acumeter Laboratories, Inc. | Method of and apparatus for somewhat-to-highly viscous fluid spraying for fiber or filament generation, controlled droplet generation, and combinations of fiber and droplet generation, intermittent and continuous, and for air-controlling spray deposition |
| US4995333A (en) * | 1989-09-15 | 1991-02-26 | Kimberly-Clark Corporation | Sprayed adhesive system for applying a continuous filament of theroplastic material and imparting a swirling motion thereto |
| DE4120881C1 (en) * | 1991-06-21 | 1993-03-11 | Boellhoff Verfahrenstechnik Gmbh & Co Kg, 4800 Bielefeld, De |
-
1995
- 1995-01-03 DE DE19500053A patent/DE19500053C1/en not_active Expired - Fee Related
- 1995-11-24 PT PT95118490T patent/PT720871E/en unknown
- 1995-11-24 EP EP95118490A patent/EP0720871B1/en not_active Expired - Lifetime
- 1995-11-24 ES ES95118490T patent/ES2142444T3/en not_active Expired - Lifetime
- 1995-11-24 DE DE59507905T patent/DE59507905D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0720871A1 (en) | 1996-07-10 |
| ES2142444T3 (en) | 2000-04-16 |
| DE19500053C1 (en) | 1996-03-07 |
| PT720871E (en) | 2000-06-30 |
| DE59507905D1 (en) | 2000-04-06 |
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